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g-c3n4-zno/HNTs composite photocatalyst, preparation method therefor and application thereof

A g-c3n4-zno, composite light technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as human health threats, soil and water pollution, hidden dangers, etc., to achieve green Environmentally friendly and efficient pollution treatment technology, the effect of increasing specific surface area and improving efficiency

Inactive Publication Date: 2015-12-23
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, antibiotics have been widely used in the prevention and control of human medicine and health and livestock and poultry diseases. Since most antibiotics cannot be completely absorbed by the body, about 90% of antibiotics pass through the excrement of patients and livestock in the form of prototype or metabolites. Discharged into the environment, causing serious pollution to soil and water
Tetracycline antibiotics are one of the most widely used antibiotics in the world, and they also belong to the category of emerging pollutants such as pharmaceuticals and personal care products (PPCPs), which have a large amount of residues in environmental media such as water and soil. , there are greater threats and hidden dangers to human health

Method used

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  • g-c3n4-zno/HNTs composite photocatalyst, preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of ZnO / HNTs precursor:

[0032] Weigh 0.04gZn(NO 3 ) 2 ·6H 2 Put O (zinc nitrate hexahydrate) into a glass beaker, add 500mL of deionized water to dissolve it completely, stir it magnetically, then add 1.0g of halloysite nanotubes, stir and heat and evaporate to dryness, put the resulting solid into an agate mortar Grind to powder, put it into a muffle furnace, and calcinate at 400°C for 3 hours, and the obtained solid is the ZnO / HNTs precursor;

[0033] (2)g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0034] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol to heat, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) to the above mixed solution, fully magnetically stir and evaporate to dryness by heating to obtain a solid Grind to powder, put it into a muffle furnace for calcination at 520°C, wait for it to cool naturally to room temperature, take it out and grind it, the obtained...

Embodiment 2

[0037] (1) Preparation of ZnO / HNTs precursor:

[0038] Weigh 0.12gZn(NO 3 ) 2 ·6H 2Put O (zinc nitrate hexahydrate) into a glass beaker, add 500mL of deionized water to dissolve it completely, stir it magnetically, then add 1.0g of halloysite nanotubes, stir and heat and evaporate to dryness, put the resulting solid into an agate mortar Grind to powder, put it into a muffle furnace, and calcinate at 400°C for 3 hours, and the obtained solid is the ZnO / HNTs precursor;

[0039] (2)g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0040] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol to heat, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) to the above mixed solution, fully magnetically stir and evaporate to dryness by heating to obtain a solid Grind to powder, put it into a muffle furnace for calcination at 520°C, wait for it to cool naturally to room temperature, take it out and grind it, the obtained ...

Embodiment 3

[0043] (1) Preparation of ZnO / HNTs precursor:

[0044] Weigh 0.20gZn(NO 3 ) 2 ·6H 2 Put O (zinc nitrate hexahydrate) into a glass beaker, add 500mL of deionized water to dissolve it completely, stir it magnetically, then add 1.0g of halloysite nanotubes, stir and heat and evaporate to dryness, put the resulting solid into an agate mortar Grind to powder, put it into a muffle furnace, and calcinate at 400°C for 3 hours, and the obtained solid is the ZnO / HNTs precursor;

[0045] (2)g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0046] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol to heat, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) to the above mixed solution, fully magnetically stir and evaporate to dryness by heating to obtain a solid Grind to powder, put it into a muffle furnace for calcination at 520°C, wait for it to cool naturally to room temperature, take it out and grind it, the obtained...

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PUM

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Abstract

The present invention provides a g-C3N4-ZnO / HNTs composite photocatalyst, a preparation method therefor, and an application thereof, and belongs to the technical field of preparation of environment-friendly materials; The method comprises: preparing a ZnO / HNTs precursor by use of a secondary calcination method; preparing the g-C3N4-ZnO / HNTs composite photocatalyst by virtue of high-temperature calcination; and using the obtained g-C3N4-ZnO / HNTs composite photocatalyst with a tubular structure coated by a reticular layer to degrade tetracycline in antibiotic wastewater. The preparation method disclosed by the invention is simple, does not cause resource waste and secondary pollution, and is a green, environment-friendly and efficient pollution treatment technology.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental protection materials, in particular a g-C 3 N 4 -ZnO / HNTs composite photocatalyst and its preparation method and application. Background technique [0002] Antibiotics are a type of secondary metabolites produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants in the process of life and production, with anti-pathogen or other activities, chemical substances that interfere with the development of other cells . In recent years, antibiotics have been widely used in the prevention and control of human medicine and health and livestock and poultry diseases. Since most antibiotics cannot be completely absorbed by the body, about 90% of antibiotics pass through the excrement of patients and livestock in the form of prototype or metabolites. Discharged into the environment, causing serious pollution to soil and water. Tetracycline antibiot...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/02C02F1/30
Inventor 霍鹏伟李金择周明君叶哲霏马长畅王会琴闫永胜
Owner JIANGSU UNIV
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